自己的mac上有python2.7和python3.6，平時都習(xí)慣于用python3.6瑰剃，實驗需要用到opencv齿诉，本來以為直接pip3 install 就可以了，結(jié)果發(fā)現(xiàn)這樣安裝的opencv還是python2的版本晌姚，python3不能使用粤剧，因此又重新找了方法。
step 1
使用終端安裝opencv
brew install opencv3 --with-contrib --with-python3 --without-python
注：python2和python3一次只能裝一個挥唠，用without-python可以跳過python2讓opencv裝在python3里抵恋。
$ brew link --force opencv3
step 2
找到python3類庫目錄site-packages
$ python
Python 3.6.6 |Anaconda, Inc.| (default, Jun 28 2018, 11:07:29)
[GCC 4.2.1 Compatible Clang 4.0.1 (tags/RELEASE_401/final)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import numpy
>>> print(numpy.__file__)
/Users/zhaofangyu/anaconda3/lib/python3.6/site-packages/numpy/__init__.py
注：numpy是任意import的一個在site-packages里的東西，也可以用其他的代替宝磨。
step 3
將cv2鏈接到python3類庫目錄下
$ cd /Users/zhaofangyu/anaconda3/lib/python3.6/site-packages/
$ ln -s /usr/local/Cellar/opencv/3.4.0/lib/python3.6/site-packages/cv2.cpython-36m-darwin.so
step 4
測試
$ python
Python 3.6.6 |Anaconda, Inc.| (default, Jun 28 2018, 11:07:29)
[GCC 4.2.1 Compatible Clang 4.0.1 (tags/RELEASE_401/final)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import cv2
>>>
